HP HP12C hp 12c_user's guide_English_E_HDPMBF12E44.pdf - Page 99

Section 8: Programming Basics 99 Pressing the gu keys is not necessary when we do the calculations manually, since in Run mode the result of every intermediate calculation is displayed automatically; but we'll include u instructions in the program so that the intermediate results AMOUNT and TAX are automatically displayed when the program is executed. Keystrokes Display 6.75?0 fCLEAR² 13 \ 6.75 0.00 13. 13.00 Stores tax rate in R0. Clears the registers in R1 through R. 6 Keys in quantity of item. Separates quantity of item from cost of item to be keyed in next. 68.5 § ?+1 :0 b ?+2 + ?+3 68.5 890.50 890.50 6.75 60.11 60.11 950.61 950.61 Keys in cost of item. AMOUNT. Adds AMOUNT to sum of AMOUNT entries in register R . 1 Recalls tax rate to display. TAX. Adds TAX to sum of TAX entries in register R2. TOTAL. Adds TOTAL to sum of TOTAL entries in register R . 3 Now, we'll store the program in program memory. Do not key in the quantity and cost of each item; these numbers will vary each time the program is run. Keystrokes fs fCLEARÎ § gu ?+1 :0 b Display 00- Sets calculator to Program mode. 00- Clears program memory. 01- 20 02- 43 31 Pauses to display AMOUNT. 03- 44 40 1 04- 45 0 05- 25 File name: hp 12c_user's guide_English_HDPMBF12E44 Printered Date: 2005/7/29 Page: 99 of 209 Dimension: 14.8 cm x 21 cm